Samsung S3C84I8 User Manual page 229

RESET
and POWER-DOWN
HARDWARE RESET VALUES
Table 8-1, 8-2, and 8-3 list the reset values for CPU and system registers, peripheral control registers, and
peripheral data registers following a reset operation. The following notation is used to represent reset values:
— A "1" or a "0" shows the reset bit value as logic one or logic zero, respectively.
— An "x" means that the bit value is undefined after a reset.
— A dash ("–") means that the bit is either not used or not mapped, but read 0 is the bit value.
Table 8-1. S3C84I8/F84I8/84I9/F84I9 Set 1 Register values after RESET
Register Name
Timer B control register
Timer B data register (high byte)
Timer B data register (low byte)
Basic timer control register
Clock Control register
System flags register
Register pointer 0
Register pointer 1
Stack pointer (high byte)
Stack pointer (low byte)
Instruction pointer (high byte)
Instruction pointer (low byte)
Interrupt request register
Interrupt mask register
System mode register
Register page pointer
8-2
Address
Mnemonic
Dec
TBCON 208
TBDATAH 209
TBDATAL 210 D2H
BTCON 211
CLKCON 212 D4H
FLAGS 213 D5H
RP0 214 D6H
RP1 215 D7H
SPH 216 D8H
SPL 217 D9H
IPH 218 DAH
IPL 219 DBH
IRQ 220 DCH
IMR 221 DDH
SYM 222 DEH
PP 223 DFH
Bit values after RESET
Hex 7 6 5
D0H 0 0 0
D1H 1 1 1
1 1 1
D3H 0 0 0
0 0 0
x x x
1 1 0
1 1 0
x x x
x x x
x x x
x x x
0 0 0
x x x
0 0 0
0 0 0
S3C84I8/F84I8/84I9/F84I9
4 3 2 1 0
0 0 0 0 0
1 1 1 1 1
1 1 1 1 1
0 0 0 0 0
0 0 0 0 0
x x x 0 0
0 0 – – –
0 1 – – –
x x x x x
x x x x x
x x x x x
x x x x x
0 0 0 0 0
x x x x x
x x x 0 0
0 0 0 0 0